Manley Performance Pro Series Connecting Rods for 8-Cyl Forged 4340 or 300M S...

Manley Performance Pro Series Connecting Rods — 8-Cyl Forged 4340 or 300M Engineered for racers and high-performance builders, the Manley Performance Pro Series connecting rods deliver extreme strength, precise balance, and dependable durability for 8-cylinder engines. Designed from premium forged alloys and finished to exacting tolerances, these rods help your engine withstand high RPM, heavy boost, and demanding track conditions. Key Features Premium Materials: Available in forged 4340 or vacuum-degassed 300M steel for superior fatigue life and toughness. Precision Manufacturing: CNC-machined I-beam profile and shot-peened surfaces for improved stress distribution and longevity. NHRA Legal Options: Select SKUs in the Pro Series I-beam lineup carry NHRA Legal certification for Stock and Super Stock classes. Multiple Weight Choices: Offered in Tour Lites, Lightweights, Standard, and Heavy weights to match rotating assembly requirements and optimize balance. Race-Ready Hardware: Supplied with high-strength fasteners and quality bushings/bearings as specified per application. Why Choose Pro Series Rods? Whether building a street/strip powerplant or an all-out race engine, these rods combine material science and manufacturing precision to reduce failure risk and improve throttle response. Choose the alloy and weight class that fits your build to maximize performance and reliability.